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<div class="title">src/ca/uqac/dim/turtledb/BinaryRelation.java</div>  </div>
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<a href="_binary_relation_8java.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*-------------------------------------------------------------------------</span>
<a name="l00002"></a>00002 <span class="comment">    Simple distributed database engine</span>
<a name="l00003"></a>00003 <span class="comment">    Copyright (C) 2012  Sylvain Hallé</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment">    This program is free software: you can redistribute it and/or modify</span>
<a name="l00006"></a>00006 <span class="comment">    it under the terms of the GNU General Public License as published by</span>
<a name="l00007"></a>00007 <span class="comment">    the Free Software Foundation, either version 3 of the License, or</span>
<a name="l00008"></a>00008 <span class="comment">    (at your option) any later version.</span>
<a name="l00009"></a>00009 <span class="comment"></span>
<a name="l00010"></a>00010 <span class="comment">    This program is distributed in the hope that it will be useful,</span>
<a name="l00011"></a>00011 <span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00012"></a>00012 <span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00013"></a>00013 <span class="comment">    GNU General Public License for more details.</span>
<a name="l00014"></a>00014 <span class="comment"></span>
<a name="l00015"></a>00015 <span class="comment">    You should have received a copy of the GNU General Public License</span>
<a name="l00016"></a>00016 <span class="comment">    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00017"></a>00017 <span class="comment"> -------------------------------------------------------------------------*/</span>
<a name="l00018"></a>00018 <span class="keyword">package </span>ca.uqac.dim.turtledb;
<a name="l00019"></a>00019 
<a name="l00020"></a>00020 <span class="keyword">import</span> ca.uqac.dim.turtledb.QueryVisitor.VisitorException;
<a name="l00021"></a>00021 
<a name="l00026"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html">00026</a> <span class="keyword">public</span> <span class="keyword">abstract</span> <span class="keyword">class </span><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html">BinaryRelation</a> <span class="keyword">extends</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html">Relation</a>
<a name="l00027"></a>00027 {
<a name="l00028"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ab8fbe3c2accf815763831a48bae8064e">00028</a>   <span class="keyword">protected</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html">Relation</a> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ab8fbe3c2accf815763831a48bae8064e">m_left</a>;
<a name="l00029"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">00029</a>   <span class="keyword">protected</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html">Relation</a> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">m_right</a>;
<a name="l00030"></a>00030   
<a name="l00031"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a323a338ef8c483b2631f63eede83e206">00031</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a323a338ef8c483b2631f63eede83e206">setLeft</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html">Relation</a> r)
<a name="l00032"></a>00032   {
<a name="l00033"></a>00033     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ab8fbe3c2accf815763831a48bae8064e">m_left</a> = r;
<a name="l00034"></a>00034   }
<a name="l00035"></a>00035   
<a name="l00036"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a22750410220fe713832bb17c0b323e8f">00036</a>   <span class="keyword">public</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a22750410220fe713832bb17c0b323e8f">setRight</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html">Relation</a> r)
<a name="l00037"></a>00037   {
<a name="l00038"></a>00038     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">m_right</a> = r;
<a name="l00039"></a>00039   }
<a name="l00040"></a>00040   
<a name="l00041"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ad70dd259af0c5e209d761c4697fed7c0">00041</a>   <span class="keyword">public</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html">Relation</a> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ad70dd259af0c5e209d761c4697fed7c0">getLeft</a>()
<a name="l00042"></a>00042   {
<a name="l00043"></a>00043     <span class="keywordflow">return</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ab8fbe3c2accf815763831a48bae8064e">m_left</a>;
<a name="l00044"></a>00044   }
<a name="l00045"></a>00045   
<a name="l00046"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a3e4c145de6cd315ccb99110383cd10cd">00046</a>   <span class="keyword">public</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html">Relation</a> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a3e4c145de6cd315ccb99110383cd10cd">getRight</a>()
<a name="l00047"></a>00047   {
<a name="l00048"></a>00048     <span class="keywordflow">return</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">m_right</a>;
<a name="l00049"></a>00049   }
<a name="l00050"></a>00050 
<a name="l00051"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a8f33b3adceab623a2eae4f80a9065ddd">00051</a>   <span class="keyword">protected</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a8f33b3adceab623a2eae4f80a9065ddd">acceptBinary</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_query_visitor.html">QueryVisitor</a> v) <span class="keywordflow">throws</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_query_visitor_1_1_visitor_exception.html">VisitorException</a>
<a name="l00052"></a>00052   {
<a name="l00053"></a>00053     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ab8fbe3c2accf815763831a48bae8064e">m_left</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#adb708409ab8c4a428ed102c4ce850ffe">accept</a>(v);
<a name="l00054"></a>00054     <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">m_right</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#adb708409ab8c4a428ed102c4ce850ffe">accept</a>(v);
<a name="l00055"></a>00055   }
<a name="l00056"></a>00056 
<a name="l00057"></a>00057   @Override
<a name="l00058"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a6d1158d548a8f0eb538871dfdc88826b">00058</a>   <span class="keyword">public</span> <span class="keywordtype">int</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#a6d1158d548a8f0eb538871dfdc88826b">tupleCount</a>()
<a name="l00059"></a>00059   {
<a name="l00060"></a>00060     <span class="keywordflow">return</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ab8fbe3c2accf815763831a48bae8064e">m_left</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#aa39696dd8f39129e2c02e1323c01b124">tupleCount</a>() + <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">m_right</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#aa39696dd8f39129e2c02e1323c01b124">tupleCount</a>();
<a name="l00061"></a>00061   }
<a name="l00062"></a>00062   
<a name="l00063"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_stream_iterator.html">00063</a>   <span class="keyword">protected</span> <span class="keyword">abstract</span> <span class="keyword">class </span><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_stream_iterator.html">BinaryRelationStreamIterator</a> <span class="keyword">extends</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation_stream_iterator.html">RelationStreamIterator</a>
<a name="l00064"></a>00064   {
<a name="l00065"></a>00065     
<a name="l00066"></a>00066   }
<a name="l00067"></a>00067   
<a name="l00068"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html">00068</a>   <span class="keyword">protected</span> <span class="keyword">class </span><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html">BinaryRelationCacheIterator</a> <span class="keyword">extends</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation_cache_iterator.html">RelationCacheIterator</a>
<a name="l00069"></a>00069   {
<a name="l00070"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a8738d111a6e35740322a841dc844bd4f">00070</a>     <span class="keyword">protected</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html">Table</a> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a8738d111a6e35740322a841dc844bd4f">m_intermediateLeft</a>;
<a name="l00071"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a78b538336277d531910fffd705cb7f39">00071</a>     <span class="keyword">protected</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html">Table</a> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a78b538336277d531910fffd705cb7f39">m_intermediateRight</a>;
<a name="l00072"></a>00072     
<a name="l00073"></a>00073     @Override
<a name="l00074"></a><a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#aaa3bd752ace607a5d9a8170af2041418">00074</a>     <span class="keyword">protected</span> <span class="keywordtype">void</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#aaa3bd752ace607a5d9a8170af2041418">getIntermediateResult</a>()
<a name="l00075"></a>00075     {
<a name="l00076"></a>00076       <a class="code" href="interfaceca_1_1uqac_1_1dim_1_1turtledb_1_1_relation_iterator.html">RelationIterator</a> it = null;
<a name="l00077"></a>00077       it = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ab8fbe3c2accf815763831a48bae8064e">m_left</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#a2ea66dc69ae6dc86627aed815ebd40b6">cacheIterator</a>();
<a name="l00078"></a>00078       <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a8738d111a6e35740322a841dc844bd4f">m_intermediateLeft</a> = <span class="keyword">new</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html">Table</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#ab8fbe3c2accf815763831a48bae8064e">m_left</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#a7a7af53642133603e51e04d79f938286">getSchema</a>());
<a name="l00079"></a>00079       <span class="keywordflow">while</span> (it.hasNext())
<a name="l00080"></a>00080       {
<a name="l00081"></a>00081         <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_tuple.html">Tuple</a> t = it.next();
<a name="l00082"></a>00082         <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a8738d111a6e35740322a841dc844bd4f">m_intermediateLeft</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html#ac72d81075238b6f6e8406714a12156ff">put</a>(t);
<a name="l00083"></a>00083       }
<a name="l00084"></a>00084       it = <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">m_right</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#a2ea66dc69ae6dc86627aed815ebd40b6">cacheIterator</a>();
<a name="l00085"></a>00085       <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a78b538336277d531910fffd705cb7f39">m_intermediateRight</a> = <span class="keyword">new</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html">Table</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">m_right</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#a7a7af53642133603e51e04d79f938286">getSchema</a>());
<a name="l00086"></a>00086       <span class="keywordflow">while</span> (it.hasNext())
<a name="l00087"></a>00087       {
<a name="l00088"></a>00088         <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_tuple.html">Tuple</a> t = it.next();
<a name="l00089"></a>00089         <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a78b538336277d531910fffd705cb7f39">m_intermediateRight</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html#ac72d81075238b6f6e8406714a12156ff">put</a>(t);
<a name="l00090"></a>00090       }
<a name="l00091"></a>00091       <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation_1_1_binary_relation_cache_iterator.html#a78b538336277d531910fffd705cb7f39">m_intermediateRight</a> = <span class="keyword">new</span> <a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_table.html">Table</a>(<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_binary_relation.html#adce5ff1bbed0598dd208fca87338a17e">m_right</a>.<a class="code" href="classca_1_1uqac_1_1dim_1_1turtledb_1_1_relation.html#a7a7af53642133603e51e04d79f938286">getSchema</a>());
<a name="l00092"></a>00092     }
<a name="l00093"></a>00093   }
<a name="l00094"></a>00094 
<a name="l00095"></a>00095 }
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